公开(公告)号：US10009123B2

公开(公告)日：2018-06-26

申请号：US14941896

申请日：2015-11-16

Applicant: Texas Instruments Incorporated

Inventor： Fanlong Li ,  Hunsoo Choo ,  Kyung-wan Nam

IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49 ,  H04B17/14 ,  H04B7/0413

CPC classification number: H04B17/14 ,  H04B7/0413

Abstract: Systems and methods for phase alignment among multiple transmitters are described. In some embodiments, a method may include creating a loop between an RF transmitter and an RF receiver; measuring a first DC signal on the I and Q paths of the RF receiver without inserting a DC signal in the I and Q paths of the RF transmitter; measuring a second DC signal on the I and Q paths of the RF receiver while inserting a non-zero DC signal in the I and Q paths of the RF transmitter; and calculating a relative phase difference between the RF transmitter and the RF receiver using the first and second DC signals.

公开(公告)号：US20160308598A1

公开(公告)日：2016-10-20

申请号：US14941896

申请日：2015-11-16

Applicant: Texas Instruments Incorporated

Inventor： Fanlong Li ,  Hunsoo Choo ,  Kyung-wan Nam

IPC: H04B7/06

CPC classification number: H04B17/14 ,  H04B7/0413

Abstract: Systems and methods for phase alignment among multiple transmitters are described. In some embodiments, a method may include creating a loop between an RF transmitter and an RF receiver; measuring a first DC signal on the I and Q paths of the RF receiver without inserting a DC signal in the I and Q paths of the RF transmitter; measuring a second DC signal on the I and Q paths of the RF receiver while inserting a non-zero DC signal in the I and Q paths of the RF transmitter; and calculating a relative phase difference between the RF transmitter and the RF receiver using the first and second DC signals.

Abstract translation: 描述了用于多个发射机之间的相位对准的系统和方法。 在一些实施例中，一种方法可以包括在RF发射机和RF接收机之间建立环路; 测量RF接收机的I和Q路径上的第一DC信号，而不在RF发射机的I和Q路径中插入DC信号; 在RF发射机的I和Q路径中插入非零DC信号，测量RF接收机的I和Q路径上的第二DC信号; 以及使用所述第一和第二DC信号来计算所述RF发射机和所述RF接收机之间的相对相位差。

公开(公告)号：US20180269995A1

公开(公告)日：2018-09-20

申请号：US15987256

申请日：2018-05-23

Applicant: Texas Instruments Incorporated

Inventor： Fanlong Li ,  Hunsoo Choo ,  Kyung-wan Nam

IPC: H04B17/14 ,  H04B7/0413

CPC classification number: H04B17/14 ,  H04B7/0413

Abstract: Systems and methods for phase alignment among multiple transmitters are described. In some embodiments, a method may include creating a loop between an RF transmitter and an RF receiver; measuring a first DC signal on the I and Q paths of the RF receiver without inserting a DC signal in the I and Q paths of the RF transmitter; measuring a second DC signal on the I and Q paths of the RF receiver while inserting a non-zero DC signal in the I and Q paths of the RF transmitter; and calculating a relative phase difference between the RF transmitter and the RF receiver using the first and second DC signals.